To me, it sounds like most (if not all) of your boost in testosterone is directly from the Anastrazole. Before committing to a TRT protocol I decided to give Anastrazole a shot and it was the only thing I was taking; AI-monotherapy if you will. On the AI alone, it boosted my T levels from 179-200’s to 638. Please check out my thread on the matter:
In my case, my estradiol was very very high and reducing my estradiol’s levels to the low 20’s boosted my test levels to 638. In your case, your E2 levels a little high and reducing your E2 levels showed a small boost in testosterone. It seems consistent with other studies I’ve read with those with idiopathic hypogonadism and very high estradiol levels.
Good luck to you and hope you start feeling better!